package com.can.ThreadState;

//测试线程的优先级,由高到低,越高越容易优先，但不一定
//优先级低只意味着获取调度的概念低，并不是优先级低就不会被优先调用，这都是看CPU的调度。
public class TestPriority {

    public static void main(String[] args) {
        //主线程默认优先级
        System.out.println("main-->"+Thread.currentThread().getPriority());

        MyPriority myPriority = new MyPriority();

        Thread t1 = new Thread(myPriority,"t1");
        Thread t2 = new Thread(myPriority,"t2");
        Thread t3 = new Thread(myPriority,"t3");
        Thread t4 = new Thread(myPriority,"t4");
        Thread t5 = new Thread(myPriority,"t5");
        Thread t6 = new Thread(myPriority,"t6");

        //先设置优先级，在启动

        //默认优先级5
        t1.start();

        t2.setPriority(1);
        t2.start();

        t3.setPriority(4);
        t3.start();

        t4.setPriority(Thread.MAX_PRIORITY); //10
        t4.start();

        t5.setPriority(8);
        t5.start();

        t6.setPriority(7);
        t6.start();
    }
}

class MyPriority implements Runnable{

    @Override
    public void run() {
        System.out.println(Thread.currentThread().getName()+"-->"+Thread.currentThread().getPriority());
    }
}